Table of contents

t.snap is designed to convert time instances of maps into time
intervals or to create valid temporal topologies for space time
datasets. Raster, 3D raster and vector space time datasets are
supported with absolute and relative time.

This module "snaps" the end time of each registered map of a space time
dataset to the start time of the map that is the temporal nearest
neighbour in the future. Maps with equal time stamps are not modified
and must be removed or modified to create a valid temporal topology. In
case the last map in the space time dataset is a time instance, the
granularity of the space time dataset will be used to create the time
interval.

A raster space time dataset will be create using precipitation maps for 2012
then using absolute time in a space time raster dataset using an increment
of one month.
At the end we snap the created time instances resulting in time intervals.